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introduction：Ceramic bearing has low thermal expansion coefficient because of its material，Low heat transfer performance，Elasticity measures small and other characteristics，Can completely cover the present precision、All applications of all-steel bearings above medium speed，However, attention should be paid to the installation。When installing ceramic bearings，Equal pressure must be applied to the circumference of the ring face，In order to load the ceramic bearing ring, it is forbidden to hit the bearing face directly with a hammer and other heavy objects，Bearing for protection!When a non-separable ceramic bearing is mounted on both the shaft and the bearing box，The inner and outer rings are pressed evenly with a cushion iron。In addition，If on one side of the ring( E.g. outer ring )Apply pressure，Will pass the roller to the other side of the ring( E.g. inner ring )indentation，This often causes indentation or abrasion on the rolling surface of ceramic bearings，Remember not to use。
2018-08-28 Reading quantity 378
introduction：Proximity sensors have a long service life、Work reliably、High repeated positioning accuracy、No mechanical wear、No spark、noiseless、Strong vibration resistance and other characteristics。In the automatic control system can be used as a limit、count、Positioning control and automatic protection link。It is widely used in machine tools、metallurgy、Chemical engineering、Textile and printing industries。Before I talk about the application of proximity sensors，Lets look at it first，Some of the main functions it has
2018-08-27 Reading quantity 437
introduction：The actual situation is the same as the rolling bearing，rollkoyoBearing accuracy is also divided into（main）Dimensional accuracy and rotation accuracy。The accuracy level has been standardized according to international parameters，Fall intoP０level、P６level、P５level、P４level、P２Grade five。 Accuracy from０Step by step increase，For general purpose0Level sufficient，But when used in other conditions or occasions，We need it5Grade or higher accuracy up。 The accuracy level above is althoughISOThe standard is formulated as the basis，However, the name varies from country to country。 Dimensional accuracy（Items related to shaft and housing installation） １、Inside diameter、Outside diameter、Permissible deviation of width and assembly width ２、Allowable deviation of inner and outer complex diameter of roller group ３、The permissible limit of the chamfer size ４、Allowable variation in width
2018-08-27 Reading quantity 1198
introduction：LCD switch power supply part withCRTThe basic principle of displays is similar。therefore，They also have many similarities in their overhaul。For this part of the circuit，The common failure phenomenon is to turn on the fuse tube、Power-on no output、There is an output but the voltage is high or low，Because we are familiar with this kind of failure，Therefore, the following brief introduction of this part of the circuit maintenance ideas。
2018-08-22 Reading quantity 473
introduction：Linear bearing is a linear motion system，Used in combination with linear travel and cylindrical shaft。Linear bearings have low friction，And relatively stable，Does not vary with bearing speed，It can obtain smooth linear motion with high precision。 Linear bearing consumption also has its limitations，The main thing is that the bearing impact load capacity is poor，And the carrying capacity is also poor，Secondly, the vibration and noise of linear bearings are larger when moving at high speed。Linear bearings are widely used in precision machine tools、Textile machinery、Food packaging machinery、Sliding parts of industrial machinery such as printing machinery。
2018-08-22 Reading quantity 666
introduction：cpcAn important characteristic of guide oil is：It must be able to separate well from water-based cutting fluid、Not miscible。And the anti-emulsification performance of the guide oil，Always exceptional。
2018-08-21 Reading quantity 1319
introduction：The limit access switch has several conditions： first，Due to prolonged touch，There will be a deformation of the approach switch。Cause poor contact。 second，Because its mechanical，This results in mechanical jitter，For the rear control circuit，Need to add anti-vibration circuit。 third，The proximity switch frequency is not high，More per second20Time or so，In some cases where high speed limits are required，I wont be able to meet the needs。 For the above three disadvantages，The inductive proximity switch makes up for it。
2018-08-21 Reading quantity 441
introduction：snBearing seat design,The fit of shaft and bearing seat SNThe bearing seat is one that can accept a combined load、Construction of special large and extra-large bearing seats，It has a compact construction、gyrosensitivity、The device is easy to maintain。Bearing housings are widely used in the rolling industry，The selection and installation requirements for the bearing seat are also relatively strict。Even if bearings are correctly selected from numerous types，If the mounting part of the bearing is improperly designed，Nor can it give full play to its performance。Especially needle roller bearings，The wall thickness of the ring is thinner than that of other rolling shafts，Therefore, special consideration must be given to the design and coordination of the shaft and bearing seat。
2018-08-21 Reading quantity 546
introduction：The flat belt in the industrial belt of Adefalk generally has a layer of rubber inside and outside the layer，inelasticity，inSC、KSC、M、H、LEqual size，amongSC、KSC、MModel for flat belt（Industrial belt）Its a yarn belt，Mainly used for weft machine、Spinning and twisting machines、Printing press、Bookbinding machine、Folding machine、Automatic ticketing machine、Vending machines and other light load transmission and transmission。
2018-08-20 Reading quantity 585
introduction：After a variety of electronic switches appear on the market(Includes delay switch)Carry out analytical tests，These switches were found to have a static power consumption of more than 600 or 700 milliwatts，Over the course of a year, the static power consumption of each electronic switch is5、6Degree or above。Every manufacturer produces a large number of these switches for people to use every year，You can imagine how much waste。For this purpose，The author uses a very common small current touch thyristor(It has the characteristics of small trigger current of the control pole，Trigger current is much less than200μA，The current rating is1AThe price of this thyristor is only four、Fifty cents)，Three kinds of practical electronic touch switches are designed and manufactured，These switches have simple circuits、Low cost、Component purchase、Work reliably、Easy to use and other features，More importantly, there is no static power consumption or only very small power consumption。There is no need to distinguish the two lead wir
2018-08-20 Reading quantity 625
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